U.S. patent number 6,811,366 [Application Number 10/390,425] was granted by the patent office on 2004-11-02 for screw band with washers.
Invention is credited to Ho-Tien Chen.
United States Patent |
6,811,366 |
Chen |
November 2, 2004 |
Screw band with washers
Abstract
A screw band with washers includes a screw band having a
plurality of screw holes for screws respectively provided with a
washer in advance to be positioned therein. Each screw hole has a
pinching surface and a plurality of connect ribs are provided
between each pinching surface and the screw band. The screw band
further has a plurality of tooth grooves formed in opposite
lengthwise sides to be fitted in by a tool and enable the screw
band moved forward. A washer is fitted around the shank of each
screw, located just under the lower surface of the screw band to
sandwich the screw band together with the head of each screw so as
to keep each screw vertical to the screw band to enable the screw
correctly driven in an object. The diameter of each washer may be
larger or smaller than that of the head.
Inventors: |
Chen; Ho-Tien (Tainan City,
TW) |
Family
ID: |
32962357 |
Appl.
No.: |
10/390,425 |
Filed: |
March 14, 2003 |
Current U.S.
Class: |
411/533; 206/346;
411/442 |
Current CPC
Class: |
F16B
43/00 (20130101); F16B 27/00 (20130101) |
Current International
Class: |
F16B
27/00 (20060101); F16B 43/00 (20060101); F16B
027/00 () |
Field of
Search: |
;411/533,441,442,999,352,353 ;206/345-347,338,341 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Saether; Flemming
Claims
What is claimed is:
1. A screw band with washers comprising a screw band provided with
a plurality of tooth grooves formed respectively spaced apart
equidistantly in two lengthwise sides and a plurality of screw
holes formed spaced apart equidistantly in the lengthwise center
for receiving a plurality of screws, the shank of each said screw
fitted in each said screw hole, each said screw hole having a
pinching surface closely contacting with a lower surface of the
head of each said screw, a washer fitted around the shank of each
said screw closely contacting with a lower surface of said screw
band, the head of each said screw and each said washer sandwiching
said screw band so that each said screw is kept strictly
perpendicular to said screw band and subsequently each said screw
can be driven in an object smoothly without inclining to any side,
each said washer not functioning to impede each said screw during
being driven in an object.
Description
FIELD OF THE INVENTION
This invention relates a screw band with washers, particularly to
one provided with a plurality of screw holes for screws
respectively attached with a washer in advance to be fitted through
therein. Then each screw hole has a pinching surface, and a connect
rib is provided between the pinching surface and the screw band.
The screw band further has a plurality of tooth grooves formed in
opposite lengthwise sides for teeth of a tool to fit thereinto move
the screw band. Each screw has its shank fitted around with the
washer and contacts with a lower surface of the screw band. Then
the washer can have a diameter larger or smaller than that of the
head of the screw, enabling the screws on the screw band driven
just vertically in an object.
BACKGROUND OF THE INVENTION
A conventional screw band with washers shown in FIGS. 1, 2 and 3
includes a screw band 1, a plurality of screws 2 respectively
fitted through a screw hole with its shank 20 closely contacting
with its side surface 10, and then a clamp band 11 is then pushed
out by a process machine to surround half of the threads 200 of
each screw along with the screw band 1. Then a washer 3 is fitted
around the shank of each screw 2, located very near the tip 21 of
the screw and around the lower portion of the shank 20 so that if
the screw 2 is inclined at the moment of driven by an electric or a
pneumatic tool, the inner surface 30 of the washer 3 may rub
against the surface of an object as shown in FIG. 3, and become not
flat and impossible to prevent moisture from percolating in the
object.
Next, the friction between the washer 3 and the surface of an
object presents a hindrance for the screw 2 in driving operation in
the object.
SUMMARY OF THE INVENTION
The object of the invention is to offer a screw band with washers,
which have the washers possible to let the screw driven smoothly in
an object, without any friction between the washer and the
object.
The feature of the invention is the washer and the head of each
screw sandwiching the screw band to keep each screw strictly
vertical to the screw band so as to be driven correctly in an
object.
BRIEF DESCRIPTION OF THE DRAWINGS
This invention will be better understood by referring to the
accompanying drawings, wherein:
FIG. 1 is a side view of a conventional screw band with
washers;
FIG. 2 is a cross-sectional view of the line 2--2 in FIG. 1;
FIG. 3 is a side view of a screw kept in the conventional screw
band with washers being driven in an object;
FIG. 4 is a partial upper view of a first preferred embodiment of a
screw band with washers in the preset invention;
FIG. 5 is a cross-sectional view of the line 5--5 in FIG. 4;
FIG. 6 is a partial exploded perspective view of the first
preferred embodiment of a screw band with washers in the present
invention;
FIG. 7 is a perspective view of the first preferred embodiment of a
screw band with washers in the present invention;
FIG. 8 is a partial upper view of a second preferred embodiment of
a screw band with washers in the present invention;
FIG. 9 is a cross-sectional view of the line 9--9 in FIG. 8;
and,
FIG. 10 is a side view of a screw with a washer in the screw band
being driven in an object in the present invention.
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of a screw band with washers in the invention,
as shown in FIGS. 4-7, includes a screw band 4, a plurality of
tooth grooves 40 formed spaced apart equidistantly in opposite
lengthwise sides of the screw band 4 so that the screw band 4 may
be moved forward by operation of an electric or pneumatic tool, a
plurality of screw holes 41 formed spaced apart equidistantly in
the lengthwise center of the screw band 4 for screws 5 to fit
therein. Each screw hole 41 has a pinching surface 410 to contact
closely with a lower surface 500 of the head 50 of each screw 5 as
shown in FIG. 5 so that each screw 5 may be kept strictly vertical
to the screw band 4. Further the screw band 4 has a plurality of
connect ribs 42 to be located between the pinching surface 410 and
the screw band 4,
Each screw 5 has its shank 51 fitted in the screw hole 41, and a
washer 6 is fitted around the shank 51 of each screw 5.
The washer 6 is so located that its upper surface is in close
contact with the lower surface of the screw band 4, having a
diameter either larger or smaller than that of the head 50 of each
screw 5. Therefore, the diameter of the washer 6 can be decided
according to real necessity. The washer 6 can be fitted around each
screw 5 after the screw 5 is attached on the screw band 4.
Next, FIGS. 8 and 9 show a second embodiment of a screw band with
washers, having the same structure as the first preferred
embodiment, except the shape of the screw band. So it is quite
obvious that the shape of the screw band used in the first and the
second preferred embodiment does not matter. And the washers in the
second preferred embodiment more closely contact with the lower
surface 43 of the screw band 4.
In addition, as shown in FIG. 10, the washer 6 does not come near
to the surface of an object until the screw 5 is completely driven
in the object, so there is no wear issue of the washer, which can
sandwich the screw band in conjunction with the head of the screw
5, keeping strictly vertical the screw 5 without inclining during
being driven by a driving tool, facilitating operation and
elevating work effectiveness.
While the preferred embodiments of the invention have been
described above, it will be recognized and understood that various
modifications may be made therein and the appended claims are
intended to cover all such modifications that may fall within the
spirit and scope of the invention.
* * * * *